Home / 840,455.55-1,254,128.21-749,875.53

Finding the Fourth Proportional to 840,455.55, 1,254,128.21 and 749,875.53

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Solution

The fourth proportional to 840,455.55, 1,254,128.21 and 749,875.53 is: 1,118,964.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,455.55 : 1,254,128.21 = 749,875.53 : x
  2. Step 2: Convert to fraction form
    840,455.55/1,254,128.21 = 749,875.53/x
  3. Step 3: Cross multiply
    840,455.55x = 1,254,128.21 × 749,875.53
  4. Step 4: Simplify right side
    840,455.55x = 940,440,052,412.32
  5. Step 5: Solve for x
    x = 940,440,052,412.32/840,455.55
  6. Step 6: Final answer
    x = 1,118,964.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.