Home / 989,387.55-1,484,164.55-315,564.65

Finding the Fourth Proportional to 989,387.55, 1,484,164.55 and 315,564.65

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Solution

The fourth proportional to 989,387.55, 1,484,164.55 and 315,564.65 is: 473,373.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,387.55 : 1,484,164.55 = 315,564.65 : x
  2. Step 2: Convert to fraction form
    989,387.55/1,484,164.55 = 315,564.65/x
  3. Step 3: Cross multiply
    989,387.55x = 1,484,164.55 × 315,564.65
  4. Step 4: Simplify right side
    989,387.55x = 468,349,857,764.51
  5. Step 5: Solve for x
    x = 468,349,857,764.51/989,387.55
  6. Step 6: Final answer
    x = 473,373.51

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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.