Home / 868,643.92-1,303,139.70-300,045.76

Finding the Fourth Proportional to 868,643.92, 1,303,139.70 and 300,045.76

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Solution

The fourth proportional to 868,643.92, 1,303,139.70 and 300,045.76 is: 450,128.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,643.92 : 1,303,139.70 = 300,045.76 : x
  2. Step 2: Convert to fraction form
    868,643.92/1,303,139.70 = 300,045.76/x
  3. Step 3: Cross multiply
    868,643.92x = 1,303,139.70 × 300,045.76
  4. Step 4: Simplify right side
    868,643.92x = 391,001,541,672.67
  5. Step 5: Solve for x
    x = 391,001,541,672.67/868,643.92
  6. Step 6: Final answer
    x = 450,128.68

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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.