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Finding the Fourth Proportional to 515,061.60, 772,592.40 and 477,736.80

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Solution

The fourth proportional to 515,061.60, 772,592.40 and 477,736.80 is: 716,605.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,061.60 : 772,592.40 = 477,736.80 : x
  2. Step 2: Convert to fraction form
    515,061.60/772,592.40 = 477,736.80/x
  3. Step 3: Cross multiply
    515,061.60x = 772,592.40 × 477,736.80
  4. Step 4: Simplify right side
    515,061.60x = 369,095,820,880.32
  5. Step 5: Solve for x
    x = 369,095,820,880.32/515,061.60
  6. Step 6: Final answer
    x = 716,605.20

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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.