Home / 1,377,135.40-2,065,703.10-478,278.40

Finding the Fourth Proportional to 1,377,135.40, 2,065,703.10 and 478,278.40

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Solution

The fourth proportional to 1,377,135.40, 2,065,703.10 and 478,278.40 is: 717,417.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377,135.40 : 2,065,703.10 = 478,278.40 : x
  2. Step 2: Convert to fraction form
    1,377,135.40/2,065,703.10 = 478,278.40/x
  3. Step 3: Cross multiply
    1,377,135.40x = 2,065,703.10 × 478,278.40
  4. Step 4: Simplify right side
    1,377,135.40x = 987,981,173,543.04
  5. Step 5: Solve for x
    x = 987,981,173,543.04/1,377,135.40
  6. Step 6: Final answer
    x = 717,417.60

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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.