Home / 989,172.60-1,482,983.77-390,581.81

Finding the Fourth Proportional to 989,172.60, 1,482,983.77 and 390,581.81

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Solution

The fourth proportional to 989,172.60, 1,482,983.77 and 390,581.81 is: 585,566.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,172.60 : 1,482,983.77 = 390,581.81 : x
  2. Step 2: Convert to fraction form
    989,172.60/1,482,983.77 = 390,581.81/x
  3. Step 3: Cross multiply
    989,172.60x = 1,482,983.77 × 390,581.81
  4. Step 4: Simplify right side
    989,172.60x = 579,226,487,558.27
  5. Step 5: Solve for x
    x = 579,226,487,558.27/989,172.60
  6. Step 6: Final answer
    x = 585,566.65

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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.