Home / 845,005.32-1,267,507.44-339,566.40

Finding the Fourth Proportional to 845,005.32, 1,267,507.44 and 339,566.40

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Solution

The fourth proportional to 845,005.32, 1,267,507.44 and 339,566.40 is: 509,349.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    845,005.32 : 1,267,507.44 = 339,566.40 : x
  2. Step 2: Convert to fraction form
    845,005.32/1,267,507.44 = 339,566.40/x
  3. Step 3: Cross multiply
    845,005.32x = 1,267,507.44 × 339,566.40
  4. Step 4: Simplify right side
    845,005.32x = 430,402,938,374.02
  5. Step 5: Solve for x
    x = 430,402,938,374.02/845,005.32
  6. Step 6: Final answer
    x = 509,349.38

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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.