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Finding the Fourth Proportional to 992,798.78, 1,489,345.80 and 460,373.64

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Solution

The fourth proportional to 992,798.78, 1,489,345.80 and 460,373.64 is: 690,628.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,798.78 : 1,489,345.80 = 460,373.64 : x
  2. Step 2: Convert to fraction form
    992,798.78/1,489,345.80 = 460,373.64/x
  3. Step 3: Cross multiply
    992,798.78x = 1,489,345.80 × 460,373.64
  4. Step 4: Simplify right side
    992,798.78x = 685,655,547,164.71
  5. Step 5: Solve for x
    x = 685,655,547,164.71/992,798.78
  6. Step 6: Final answer
    x = 690,628.92

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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.