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Finding the Fourth Proportional to 487,653.80, 730,055.10 and 347,685.80

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Solution

The fourth proportional to 487,653.80, 730,055.10 and 347,685.80 is: 520,512.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,653.80 : 730,055.10 = 347,685.80 : x
  2. Step 2: Convert to fraction form
    487,653.80/730,055.10 = 347,685.80/x
  3. Step 3: Cross multiply
    487,653.80x = 730,055.10 × 347,685.80
  4. Step 4: Simplify right side
    487,653.80x = 253,829,791,487.58
  5. Step 5: Solve for x
    x = 253,829,791,487.58/487,653.80
  6. Step 6: Final answer
    x = 520,512.28

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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.