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Finding the Fourth Proportional to 739,129.32, 1,020,438 and 484,924.32

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Solution

The fourth proportional to 739,129.32, 1,020,438 and 484,924.32 is: 669,483.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,129.32 : 1,020,438 = 484,924.32 : x
  2. Step 2: Convert to fraction form
    739,129.32/1,020,438 = 484,924.32/x
  3. Step 3: Cross multiply
    739,129.32x = 1,020,438 × 484,924.32
  4. Step 4: Simplify right side
    739,129.32x = 494,835,203,252.16
  5. Step 5: Solve for x
    x = 494,835,203,252.16/739,129.32
  6. Step 6: Final answer
    x = 669,483.93

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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.