Home / 656,400.30-982,632.15-390,023.70

Finding the Fourth Proportional to 656,400.30, 982,632.15 and 390,023.70

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Solution

The fourth proportional to 656,400.30, 982,632.15 and 390,023.70 is: 583,866.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,400.30 : 982,632.15 = 390,023.70 : x
  2. Step 2: Convert to fraction form
    656,400.30/982,632.15 = 390,023.70/x
  3. Step 3: Cross multiply
    656,400.30x = 982,632.15 × 390,023.70
  4. Step 4: Simplify right side
    656,400.30x = 383,249,826,881.96
  5. Step 5: Solve for x
    x = 383,249,826,881.96/656,400.30
  6. Step 6: Final answer
    x = 583,866.01

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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.