Home / 739,901.40-1,109,852.10-385,607.40

Finding the Fourth Proportional to 739,901.40, 1,109,852.10 and 385,607.40

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Solution

The fourth proportional to 739,901.40, 1,109,852.10 and 385,607.40 is: 578,411.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,901.40 : 1,109,852.10 = 385,607.40 : x
  2. Step 2: Convert to fraction form
    739,901.40/1,109,852.10 = 385,607.40/x
  3. Step 3: Cross multiply
    739,901.40x = 1,109,852.10 × 385,607.40
  4. Step 4: Simplify right side
    739,901.40x = 427,967,182,665.54
  5. Step 5: Solve for x
    x = 427,967,182,665.54/739,901.40
  6. Step 6: Final answer
    x = 578,411.10

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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.