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Finding the Fourth Proportional to 652,302.09, 900,275.31 and 397,800.90

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Solution

The fourth proportional to 652,302.09, 900,275.31 and 397,800.90 is: 549,025.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,302.09 : 900,275.31 = 397,800.90 : x
  2. Step 2: Convert to fraction form
    652,302.09/900,275.31 = 397,800.90/x
  3. Step 3: Cross multiply
    652,302.09x = 900,275.31 × 397,800.90
  4. Step 4: Simplify right side
    652,302.09x = 358,130,328,565.78
  5. Step 5: Solve for x
    x = 358,130,328,565.78/652,302.09
  6. Step 6: Final answer
    x = 549,025.27

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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.