Home / 875,443.60-1,312,387.80-520,080.40

Finding the Fourth Proportional to 875,443.60, 1,312,387.80 and 520,080.40

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Solution

The fourth proportional to 875,443.60, 1,312,387.80 and 520,080.40 is: 779,658.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,443.60 : 1,312,387.80 = 520,080.40 : x
  2. Step 2: Convert to fraction form
    875,443.60/1,312,387.80 = 520,080.40/x
  3. Step 3: Cross multiply
    875,443.60x = 1,312,387.80 × 520,080.40
  4. Step 4: Simplify right side
    875,443.60x = 682,547,171,979.12
  5. Step 5: Solve for x
    x = 682,547,171,979.12/875,443.60
  6. Step 6: Final answer
    x = 779,658.65

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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.