Home / 649,931.20-975,472.80-383,358.40

Finding the Fourth Proportional to 649,931.20, 975,472.80 and 383,358.40

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Solution

The fourth proportional to 649,931.20, 975,472.80 and 383,358.40 is: 575,377.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,931.20 : 975,472.80 = 383,358.40 : x
  2. Step 2: Convert to fraction form
    649,931.20/975,472.80 = 383,358.40/x
  3. Step 3: Cross multiply
    649,931.20x = 975,472.80 × 383,358.40
  4. Step 4: Simplify right side
    649,931.20x = 373,955,691,851.52
  5. Step 5: Solve for x
    x = 373,955,691,851.52/649,931.20
  6. Step 6: Final answer
    x = 575,377.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.