Home / 989,207.70-1,484,200.35-390,066.90

Finding the Fourth Proportional to 989,207.70, 1,484,200.35 and 390,066.90

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Solution

The fourth proportional to 989,207.70, 1,484,200.35 and 390,066.90 is: 585,253.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,207.70 : 1,484,200.35 = 390,066.90 : x
  2. Step 2: Convert to fraction form
    989,207.70/1,484,200.35 = 390,066.90/x
  3. Step 3: Cross multiply
    989,207.70x = 1,484,200.35 × 390,066.90
  4. Step 4: Simplify right side
    989,207.70x = 578,937,429,503.42
  5. Step 5: Solve for x
    x = 578,937,429,503.42/989,207.70
  6. Step 6: Final answer
    x = 585,253.66

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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.