Home / 689,412.06-951,077.70-402,803.28

Finding the Fourth Proportional to 689,412.06, 951,077.70 and 402,803.28

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Solution

The fourth proportional to 689,412.06, 951,077.70 and 402,803.28 is: 555,686.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,412.06 : 951,077.70 = 402,803.28 : x
  2. Step 2: Convert to fraction form
    689,412.06/951,077.70 = 402,803.28/x
  3. Step 3: Cross multiply
    689,412.06x = 951,077.70 × 402,803.28
  4. Step 4: Simplify right side
    689,412.06x = 383,097,217,094.86
  5. Step 5: Solve for x
    x = 383,097,217,094.86/689,412.06
  6. Step 6: Final answer
    x = 555,686.85

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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.