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Finding the Fourth Proportional to 788,648.40, 1,181,417.40 and 732,661.20

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Solution

The fourth proportional to 788,648.40, 1,181,417.40 and 732,661.20 is: 1,097,547.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,648.40 : 1,181,417.40 = 732,661.20 : x
  2. Step 2: Convert to fraction form
    788,648.40/1,181,417.40 = 732,661.20/x
  3. Step 3: Cross multiply
    788,648.40x = 1,181,417.40 × 732,661.20
  4. Step 4: Simplify right side
    788,648.40x = 865,578,689,984.88
  5. Step 5: Solve for x
    x = 865,578,689,984.88/788,648.40
  6. Step 6: Final answer
    x = 1,097,547.01

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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.