Home / 912,572.87-1,369,006.94-380,147.72

Finding the Fourth Proportional to 912,572.87, 1,369,006.94 and 380,147.72

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Solution

The fourth proportional to 912,572.87, 1,369,006.94 and 380,147.72 is: 570,283.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,572.87 : 1,369,006.94 = 380,147.72 : x
  2. Step 2: Convert to fraction form
    912,572.87/1,369,006.94 = 380,147.72/x
  3. Step 3: Cross multiply
    912,572.87x = 1,369,006.94 × 380,147.72
  4. Step 4: Simplify right side
    912,572.87x = 520,424,868,426.96
  5. Step 5: Solve for x
    x = 520,424,868,426.96/912,572.87
  6. Step 6: Final answer
    x = 570,283.08

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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.