Home / 724,598.64-999,977.40-402,308.76

Finding the Fourth Proportional to 724,598.64, 999,977.40 and 402,308.76

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Solution

The fourth proportional to 724,598.64, 999,977.40 and 402,308.76 is: 555,203.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,598.64 : 999,977.40 = 402,308.76 : x
  2. Step 2: Convert to fraction form
    724,598.64/999,977.40 = 402,308.76/x
  3. Step 3: Cross multiply
    724,598.64x = 999,977.40 × 402,308.76
  4. Step 4: Simplify right side
    724,598.64x = 402,299,667,822.02
  5. Step 5: Solve for x
    x = 402,299,667,822.02/724,598.64
  6. Step 6: Final answer
    x = 555,203.45

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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.