Home / 739,447.45-1,020,437.48-399,915.70

Finding the Fourth Proportional to 739,447.45, 1,020,437.48 and 399,915.70

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Solution

The fourth proportional to 739,447.45, 1,020,437.48 and 399,915.70 is: 551,883.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,447.45 : 1,020,437.48 = 399,915.70 : x
  2. Step 2: Convert to fraction form
    739,447.45/1,020,437.48 = 399,915.70/x
  3. Step 3: Cross multiply
    739,447.45x = 1,020,437.48 × 399,915.70
  4. Step 4: Simplify right side
    739,447.45x = 408,088,967,569.13
  5. Step 5: Solve for x
    x = 408,088,967,569.13/739,447.45
  6. Step 6: Final answer
    x = 551,883.67

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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.