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Finding the Fourth Proportional to 595,017.28, 820,560.88 and 390,707.72

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Solution

The fourth proportional to 595,017.28, 820,560.88 and 390,707.72 is: 538,806.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    595,017.28 : 820,560.88 = 390,707.72 : x
  2. Step 2: Convert to fraction form
    595,017.28/820,560.88 = 390,707.72/x
  3. Step 3: Cross multiply
    595,017.28x = 820,560.88 × 390,707.72
  4. Step 4: Simplify right side
    595,017.28x = 320,599,470,545.99
  5. Step 5: Solve for x
    x = 320,599,470,545.99/595,017.28
  6. Step 6: Final answer
    x = 538,806.99

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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.