Home / 691,870.04-954,779.08-390,061.88

Finding the Fourth Proportional to 691,870.04, 954,779.08 and 390,061.88

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Solution

The fourth proportional to 691,870.04, 954,779.08 and 390,061.88 is: 538,284.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,870.04 : 954,779.08 = 390,061.88 : x
  2. Step 2: Convert to fraction form
    691,870.04/954,779.08 = 390,061.88/x
  3. Step 3: Cross multiply
    691,870.04x = 954,779.08 × 390,061.88
  4. Step 4: Simplify right side
    691,870.04x = 372,422,922,929.47
  5. Step 5: Solve for x
    x = 372,422,922,929.47/691,870.04
  6. Step 6: Final answer
    x = 538,284.51

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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.