Home / 1,319,706.59-1,979,594.28-421,147.13

Finding the Fourth Proportional to 1,319,706.59, 1,979,594.28 and 421,147.13

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Solution

The fourth proportional to 1,319,706.59, 1,979,594.28 and 421,147.13 is: 631,731.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,706.59 : 1,979,594.28 = 421,147.13 : x
  2. Step 2: Convert to fraction form
    1,319,706.59/1,979,594.28 = 421,147.13/x
  3. Step 3: Cross multiply
    1,319,706.59x = 1,979,594.28 × 421,147.13
  4. Step 4: Simplify right side
    1,319,706.59x = 833,700,439,688.45
  5. Step 5: Solve for x
    x = 833,700,439,688.45/1,319,706.59
  6. Step 6: Final answer
    x = 631,731.67

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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.