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Finding the Fourth Proportional to 657,602.16, 907,393.65 and 399,344.79

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Solution

The fourth proportional to 657,602.16, 907,393.65 and 399,344.79 is: 551,036.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,602.16 : 907,393.65 = 399,344.79 : x
  2. Step 2: Convert to fraction form
    657,602.16/907,393.65 = 399,344.79/x
  3. Step 3: Cross multiply
    657,602.16x = 907,393.65 × 399,344.79
  4. Step 4: Simplify right side
    657,602.16x = 362,362,926,606.58
  5. Step 5: Solve for x
    x = 362,362,926,606.58/657,602.16
  6. Step 6: Final answer
    x = 551,036.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.