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Finding the Fourth Proportional to 651,641.70, 977,462.55 and 402,464.10

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Solution

The fourth proportional to 651,641.70, 977,462.55 and 402,464.10 is: 603,696.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,641.70 : 977,462.55 = 402,464.10 : x
  2. Step 2: Convert to fraction form
    651,641.70/977,462.55 = 402,464.10/x
  3. Step 3: Cross multiply
    651,641.70x = 977,462.55 × 402,464.10
  4. Step 4: Simplify right side
    651,641.70x = 393,393,585,469.46
  5. Step 5: Solve for x
    x = 393,393,585,469.46/651,641.70
  6. Step 6: Final answer
    x = 603,696.15

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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.