Home / 723,159.20-997,854.90-400,869.20

Finding the Fourth Proportional to 723,159.20, 997,854.90 and 400,869.20

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Solution

The fourth proportional to 723,159.20, 997,854.90 and 400,869.20 is: 553,141.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,159.20 : 997,854.90 = 400,869.20 : x
  2. Step 2: Convert to fraction form
    723,159.20/997,854.90 = 400,869.20/x
  3. Step 3: Cross multiply
    723,159.20x = 997,854.90 × 400,869.20
  4. Step 4: Simplify right side
    723,159.20x = 400,009,295,479.08
  5. Step 5: Solve for x
    x = 400,009,295,479.08/723,159.20
  6. Step 6: Final answer
    x = 553,141.40

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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.