Home / 989,524.71-1,483,363.67-390,490.83

Finding the Fourth Proportional to 989,524.71, 1,483,363.67 and 390,490.83

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Solution

The fourth proportional to 989,524.71, 1,483,363.67 and 390,490.83 is: 585,371.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,524.71 : 1,483,363.67 = 390,490.83 : x
  2. Step 2: Convert to fraction form
    989,524.71/1,483,363.67 = 390,490.83/x
  3. Step 3: Cross multiply
    989,524.71x = 1,483,363.67 × 390,490.83
  4. Step 4: Simplify right side
    989,524.71x = 579,239,908,737.69
  5. Step 5: Solve for x
    x = 579,239,908,737.69/989,524.71
  6. Step 6: Final answer
    x = 585,371.85

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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.