Home / 900,648.68-1,242,691.65-538,001.55

Finding the Fourth Proportional to 900,648.68, 1,242,691.65 and 538,001.55

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Solution

The fourth proportional to 900,648.68, 1,242,691.65 and 538,001.55 is: 742,320.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,648.68 : 1,242,691.65 = 538,001.55 : x
  2. Step 2: Convert to fraction form
    900,648.68/1,242,691.65 = 538,001.55/x
  3. Step 3: Cross multiply
    900,648.68x = 1,242,691.65 × 538,001.55
  4. Step 4: Simplify right side
    900,648.68x = 668,570,033,872.06
  5. Step 5: Solve for x
    x = 668,570,033,872.06/900,648.68
  6. Step 6: Final answer
    x = 742,320.57

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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.