Home / 958,779.18-1,438,718.27-390,055.30

Finding the Fourth Proportional to 958,779.18, 1,438,718.27 and 390,055.30

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Solution

The fourth proportional to 958,779.18, 1,438,718.27 and 390,055.30 is: 585,306.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    958,779.18 : 1,438,718.27 = 390,055.30 : x
  2. Step 2: Convert to fraction form
    958,779.18/1,438,718.27 = 390,055.30/x
  3. Step 3: Cross multiply
    958,779.18x = 1,438,718.27 × 390,055.30
  4. Step 4: Simplify right side
    958,779.18x = 561,179,680,873.26
  5. Step 5: Solve for x
    x = 561,179,680,873.26/958,779.18
  6. Step 6: Final answer
    x = 585,306.49

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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.