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Finding the Fourth Proportional to 978,798.64, 1,350,804.18 and 549,106.60

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Solution

The fourth proportional to 978,798.64, 1,350,804.18 and 549,106.60 is: 757,801.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,798.64 : 1,350,804.18 = 549,106.60 : x
  2. Step 2: Convert to fraction form
    978,798.64/1,350,804.18 = 549,106.60/x
  3. Step 3: Cross multiply
    978,798.64x = 1,350,804.18 × 549,106.60
  4. Step 4: Simplify right side
    978,798.64x = 741,735,490,545.59
  5. Step 5: Solve for x
    x = 741,735,490,545.59/978,798.64
  6. Step 6: Final answer
    x = 757,801.92

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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.