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Finding the Fourth Proportional to 559,363.04, 771,938.88 and 317,656.16

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Solution

The fourth proportional to 559,363.04, 771,938.88 and 317,656.16 is: 438,375.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,363.04 : 771,938.88 = 317,656.16 : x
  2. Step 2: Convert to fraction form
    559,363.04/771,938.88 = 317,656.16/x
  3. Step 3: Cross multiply
    559,363.04x = 771,938.88 × 317,656.16
  4. Step 4: Simplify right side
    559,363.04x = 245,211,140,375.50
  5. Step 5: Solve for x
    x = 245,211,140,375.50/559,363.04
  6. Step 6: Final answer
    x = 438,375.66

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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.