Home / 989,151.20-1,484,115.60-390,010.40

Finding the Fourth Proportional to 989,151.20, 1,484,115.60 and 390,010.40

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Solution

The fourth proportional to 989,151.20, 1,484,115.60 and 390,010.40 is: 585,168.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,151.20 : 1,484,115.60 = 390,010.40 : x
  2. Step 2: Convert to fraction form
    989,151.20/1,484,115.60 = 390,010.40/x
  3. Step 3: Cross multiply
    989,151.20x = 1,484,115.60 × 390,010.40
  4. Step 4: Simplify right side
    989,151.20x = 578,820,518,802.24
  5. Step 5: Solve for x
    x = 578,820,518,802.24/989,151.20
  6. Step 6: Final answer
    x = 585,168.90

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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.