Home / 518,942.40-778,437.90-163,984.20

Finding the Fourth Proportional to 518,942.40, 778,437.90 and 163,984.20

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Solution

The fourth proportional to 518,942.40, 778,437.90 and 163,984.20 is: 245,983.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,942.40 : 778,437.90 = 163,984.20 : x
  2. Step 2: Convert to fraction form
    518,942.40/778,437.90 = 163,984.20/x
  3. Step 3: Cross multiply
    518,942.40x = 778,437.90 × 163,984.20
  4. Step 4: Simplify right side
    518,942.40x = 127,651,516,281.18
  5. Step 5: Solve for x
    x = 127,651,516,281.18/518,942.40
  6. Step 6: Final answer
    x = 245,983.98

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1.5x scale

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.