Home / 845,543.40-1,268,315.10-425,639.40

Finding the Fourth Proportional to 845,543.40, 1,268,315.10 and 425,639.40

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Solution

The fourth proportional to 845,543.40, 1,268,315.10 and 425,639.40 is: 638,459.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    845,543.40 : 1,268,315.10 = 425,639.40 : x
  2. Step 2: Convert to fraction form
    845,543.40/1,268,315.10 = 425,639.40/x
  3. Step 3: Cross multiply
    845,543.40x = 1,268,315.10 × 425,639.40
  4. Step 4: Simplify right side
    845,543.40x = 539,844,878,174.94
  5. Step 5: Solve for x
    x = 539,844,878,174.94/845,543.40
  6. Step 6: Final answer
    x = 638,459.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.