Home / 1,638,187,848.30-2,457,281,772.45-947,739,701.10

Finding the Fourth Proportional to 1,638,187,848.30, 2,457,281,772.45 and 947,739,701.10

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Solution

The fourth proportional to 1,638,187,848.30, 2,457,281,772.45 and 947,739,701.10 is: 1,421,609,551.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,187,848.30 : 2,457,281,772.45 = 947,739,701.10 : x
  2. Step 2: Convert to fraction form
    1,638,187,848.30/2,457,281,772.45 = 947,739,701.10/x
  3. Step 3: Cross multiply
    1,638,187,848.30x = 2,457,281,772.45 × 947,739,701.10
  4. Step 4: Simplify right side
    1,638,187,848.30x = 2,328,863,492,540,240,896
  5. Step 5: Solve for x
    x = 2,328,863,492,540,240,896/1,638,187,848.30
  6. Step 6: Final answer
    x = 1,421,609,551.65

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Double scale
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Similar ratio
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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.