Home / 1,240,165,969.80-1,860,248,954.70-620,293,187.40

Finding the Fourth Proportional to 1,240,165,969.80, 1,860,248,954.70 and 620,293,187.40

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Solution

The fourth proportional to 1,240,165,969.80, 1,860,248,954.70 and 620,293,187.40 is: 930,439,781.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,165,969.80 : 1,860,248,954.70 = 620,293,187.40 : x
  2. Step 2: Convert to fraction form
    1,240,165,969.80/1,860,248,954.70 = 620,293,187.40/x
  3. Step 3: Cross multiply
    1,240,165,969.80x = 1,860,248,954.70 × 620,293,187.40
  4. Step 4: Simplify right side
    1,240,165,969.80x = 1,153,899,753,468,381,184
  5. Step 5: Solve for x
    x = 1,153,899,753,468,381,184/1,240,165,969.80
  6. Step 6: Final answer
    x = 930,439,781.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.