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Finding the Fourth Proportional to 978,081.02, 1,349,623.05 and 542,493.19

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Solution

The fourth proportional to 978,081.02, 1,349,623.05 and 542,493.19 is: 748,569.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,081.02 : 1,349,623.05 = 542,493.19 : x
  2. Step 2: Convert to fraction form
    978,081.02/1,349,623.05 = 542,493.19/x
  3. Step 3: Cross multiply
    978,081.02x = 1,349,623.05 × 542,493.19
  4. Step 4: Simplify right side
    978,081.02x = 732,161,313,344.71
  5. Step 5: Solve for x
    x = 732,161,313,344.71/978,081.02
  6. Step 6: Final answer
    x = 748,569.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.