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Finding the Fourth Proportional to 978,106.08, 1,349,718.80 and 542,482.34

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Solution

The fourth proportional to 978,106.08, 1,349,718.80 and 542,482.34 is: 748,588.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,106.08 : 1,349,718.80 = 542,482.34 : x
  2. Step 2: Convert to fraction form
    978,106.08/1,349,718.80 = 542,482.34/x
  3. Step 3: Cross multiply
    978,106.08x = 1,349,718.80 × 542,482.34
  4. Step 4: Simplify right side
    978,106.08x = 732,198,617,696.50
  5. Step 5: Solve for x
    x = 732,198,617,696.50/978,106.08
  6. Step 6: Final answer
    x = 748,588.15

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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.