Home / 761,478.32-1,050,782.28-421,939.28

Finding the Fourth Proportional to 761,478.32, 1,050,782.28 and 421,939.28

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Solution

The fourth proportional to 761,478.32, 1,050,782.28 and 421,939.28 is: 582,244.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,478.32 : 1,050,782.28 = 421,939.28 : x
  2. Step 2: Convert to fraction form
    761,478.32/1,050,782.28 = 421,939.28/x
  3. Step 3: Cross multiply
    761,478.32x = 1,050,782.28 × 421,939.28
  4. Step 4: Simplify right side
    761,478.32x = 443,366,318,659.96
  5. Step 5: Solve for x
    x = 443,366,318,659.96/761,478.32
  6. Step 6: Final answer
    x = 582,244.18

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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.