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Finding the Fourth Proportional to 511,130.24, 703,838.40 and 499,801.28

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Solution

The fourth proportional to 511,130.24, 703,838.40 and 499,801.28 is: 688,238.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,130.24 : 703,838.40 = 499,801.28 : x
  2. Step 2: Convert to fraction form
    511,130.24/703,838.40 = 499,801.28/x
  3. Step 3: Cross multiply
    511,130.24x = 703,838.40 × 499,801.28
  4. Step 4: Simplify right side
    511,130.24x = 351,779,333,233.15
  5. Step 5: Solve for x
    x = 351,779,333,233.15/511,130.24
  6. Step 6: Final answer
    x = 688,238.15

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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.