Home / 918,005.80-1,377,008.70-286,983.40

Finding the Fourth Proportional to 918,005.80, 1,377,008.70 and 286,983.40

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Solution

The fourth proportional to 918,005.80, 1,377,008.70 and 286,983.40 is: 430,475.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,005.80 : 1,377,008.70 = 286,983.40 : x
  2. Step 2: Convert to fraction form
    918,005.80/1,377,008.70 = 286,983.40/x
  3. Step 3: Cross multiply
    918,005.80x = 1,377,008.70 × 286,983.40
  4. Step 4: Simplify right side
    918,005.80x = 395,178,638,555.58
  5. Step 5: Solve for x
    x = 395,178,638,555.58/918,005.80
  6. Step 6: Final answer
    x = 430,475.10

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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.