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Finding the Fourth Proportional to 610,642.95, 915,966.78 and 255,407.79

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Solution

The fourth proportional to 610,642.95, 915,966.78 and 255,407.79 is: 383,112.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,642.95 : 915,966.78 = 255,407.79 : x
  2. Step 2: Convert to fraction form
    610,642.95/915,966.78 = 255,407.79/x
  3. Step 3: Cross multiply
    610,642.95x = 915,966.78 × 255,407.79
  4. Step 4: Simplify right side
    610,642.95x = 233,945,050,993.22
  5. Step 5: Solve for x
    x = 233,945,050,993.22/610,642.95
  6. Step 6: Final answer
    x = 383,112.67

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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.