Home / 1,380,545.40-2,069,586.90-538,901.40

Finding the Fourth Proportional to 1,380,545.40, 2,069,586.90 and 538,901.40

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Solution

The fourth proportional to 1,380,545.40, 2,069,586.90 and 538,901.40 is: 807,871.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,545.40 : 2,069,586.90 = 538,901.40 : x
  2. Step 2: Convert to fraction form
    1,380,545.40/2,069,586.90 = 538,901.40/x
  3. Step 3: Cross multiply
    1,380,545.40x = 2,069,586.90 × 538,901.40
  4. Step 4: Simplify right side
    1,380,545.40x = 1,115,303,277,831.66
  5. Step 5: Solve for x
    x = 1,115,303,277,831.66/1,380,545.40
  6. Step 6: Final answer
    x = 807,871.50

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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.