Home / 878,486.40-1,319,284.80-679,291.20

Finding the Fourth Proportional to 878,486.40, 1,319,284.80 and 679,291.20

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Solution

The fourth proportional to 878,486.40, 1,319,284.80 and 679,291.20 is: 1,020,139.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,486.40 : 1,319,284.80 = 679,291.20 : x
  2. Step 2: Convert to fraction form
    878,486.40/1,319,284.80 = 679,291.20/x
  3. Step 3: Cross multiply
    878,486.40x = 1,319,284.80 × 679,291.20
  4. Step 4: Simplify right side
    878,486.40x = 896,178,554,933.76
  5. Step 5: Solve for x
    x = 896,178,554,933.76/878,486.40
  6. Step 6: Final answer
    x = 1,020,139.36

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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.