Home / 989,389.47-1,484,191.13-315,312.33

Finding the Fourth Proportional to 989,389.47, 1,484,191.13 and 315,312.33

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Solution

The fourth proportional to 989,389.47, 1,484,191.13 and 315,312.33 is: 473,002.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,389.47 : 1,484,191.13 = 315,312.33 : x
  2. Step 2: Convert to fraction form
    989,389.47/1,484,191.13 = 315,312.33/x
  3. Step 3: Cross multiply
    989,389.47x = 1,484,191.13 × 315,312.33
  4. Step 4: Simplify right side
    989,389.47x = 467,983,761,789.07
  5. Step 5: Solve for x
    x = 467,983,761,789.07/989,389.47
  6. Step 6: Final answer
    x = 473,002.57

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Double scale
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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.