Home / 1,070,178.52-1,603,128.95-643,480.70

Finding the Fourth Proportional to 1,070,178.52, 1,603,128.95 and 643,480.70

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Solution

The fourth proportional to 1,070,178.52, 1,603,128.95 and 643,480.70 is: 963,935.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070,178.52 : 1,603,128.95 = 643,480.70 : x
  2. Step 2: Convert to fraction form
    1,070,178.52/1,603,128.95 = 643,480.70/x
  3. Step 3: Cross multiply
    1,070,178.52x = 1,603,128.95 × 643,480.70
  4. Step 4: Simplify right side
    1,070,178.52x = 1,031,582,535,718.86
  5. Step 5: Solve for x
    x = 1,031,582,535,718.86/1,070,178.52
  6. Step 6: Final answer
    x = 963,935.00

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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.