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Finding the Fourth Proportional to 465,841.80, 698,762.70 and 431,627.40

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Solution

The fourth proportional to 465,841.80, 698,762.70 and 431,627.40 is: 647,441.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,841.80 : 698,762.70 = 431,627.40 : x
  2. Step 2: Convert to fraction form
    465,841.80/698,762.70 = 431,627.40/x
  3. Step 3: Cross multiply
    465,841.80x = 698,762.70 × 431,627.40
  4. Step 4: Simplify right side
    465,841.80x = 301,605,127,417.98
  5. Step 5: Solve for x
    x = 301,605,127,417.98/465,841.80
  6. Step 6: Final answer
    x = 647,441.10

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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.