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Finding the Fourth Proportional to 556,501.50, 767,972.07 and 314,778.87

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Solution

The fourth proportional to 556,501.50, 767,972.07 and 314,778.87 is: 434,394.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,501.50 : 767,972.07 = 314,778.87 : x
  2. Step 2: Convert to fraction form
    556,501.50/767,972.07 = 314,778.87/x
  3. Step 3: Cross multiply
    556,501.50x = 767,972.07 × 314,778.87
  4. Step 4: Simplify right side
    556,501.50x = 241,741,380,386.16
  5. Step 5: Solve for x
    x = 241,741,380,386.16/556,501.50
  6. Step 6: Final answer
    x = 434,394.84

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1.5x scale

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.