Home / 535,339.17-738,829.78-320,479.18

Finding the Fourth Proportional to 535,339.17, 738,829.78 and 320,479.18

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Solution

The fourth proportional to 535,339.17, 738,829.78 and 320,479.18 is: 442,298.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,339.17 : 738,829.78 = 320,479.18 : x
  2. Step 2: Convert to fraction form
    535,339.17/738,829.78 = 320,479.18/x
  3. Step 3: Cross multiply
    535,339.17x = 738,829.78 × 320,479.18
  4. Step 4: Simplify right side
    535,339.17x = 236,779,559,405.71
  5. Step 5: Solve for x
    x = 236,779,559,405.71/535,339.17
  6. Step 6: Final answer
    x = 442,298.22

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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.