Home / 742,392.90-1,113,589.35-553,436.10

Finding the Fourth Proportional to 742,392.90, 1,113,589.35 and 553,436.10

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Solution

The fourth proportional to 742,392.90, 1,113,589.35 and 553,436.10 is: 830,154.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,392.90 : 1,113,589.35 = 553,436.10 : x
  2. Step 2: Convert to fraction form
    742,392.90/1,113,589.35 = 553,436.10/x
  3. Step 3: Cross multiply
    742,392.90x = 1,113,589.35 × 553,436.10
  4. Step 4: Simplify right side
    742,392.90x = 616,300,546,865.54
  5. Step 5: Solve for x
    x = 616,300,546,865.54/742,392.90
  6. Step 6: Final answer
    x = 830,154.15

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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.