Home / 935,140.70-1,402,711.05-578,999.90

Finding the Fourth Proportional to 935,140.70, 1,402,711.05 and 578,999.90

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Solution

The fourth proportional to 935,140.70, 1,402,711.05 and 578,999.90 is: 868,499.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    935,140.70 : 1,402,711.05 = 578,999.90 : x
  2. Step 2: Convert to fraction form
    935,140.70/1,402,711.05 = 578,999.90/x
  3. Step 3: Cross multiply
    935,140.70x = 1,402,711.05 × 578,999.90
  4. Step 4: Simplify right side
    935,140.70x = 812,169,557,678.90
  5. Step 5: Solve for x
    x = 812,169,557,678.90/935,140.70
  6. Step 6: Final answer
    x = 868,499.85

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Double scale
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Similar ratio
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1.5x scale

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.