Home / 860,358.48-1,187,322.12-478,401.36

Finding the Fourth Proportional to 860,358.48, 1,187,322.12 and 478,401.36

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Solution

The fourth proportional to 860,358.48, 1,187,322.12 and 478,401.36 is: 660,209.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,358.48 : 1,187,322.12 = 478,401.36 : x
  2. Step 2: Convert to fraction form
    860,358.48/1,187,322.12 = 478,401.36/x
  3. Step 3: Cross multiply
    860,358.48x = 1,187,322.12 × 478,401.36
  4. Step 4: Simplify right side
    860,358.48x = 568,016,516,966.08
  5. Step 5: Solve for x
    x = 568,016,516,966.08/860,358.48
  6. Step 6: Final answer
    x = 660,209.12

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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.