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Finding the Fourth Proportional to 736,860, 1,016,866.80 and 418,908

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Solution

The fourth proportional to 736,860, 1,016,866.80 and 418,908 is: 578,093.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    736,860 : 1,016,866.80 = 418,908 : x
  2. Step 2: Convert to fraction form
    736,860/1,016,866.80 = 418,908/x
  3. Step 3: Cross multiply
    736,860x = 1,016,866.80 × 418,908
  4. Step 4: Simplify right side
    736,860x = 425,973,637,454.40
  5. Step 5: Solve for x
    x = 425,973,637,454.40/736,860
  6. Step 6: Final answer
    x = 578,093.04

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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.