Home / 742,403.80-1,113,605.70-476,683.30

Finding the Fourth Proportional to 742,403.80, 1,113,605.70 and 476,683.30

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Solution

The fourth proportional to 742,403.80, 1,113,605.70 and 476,683.30 is: 715,024.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,403.80 : 1,113,605.70 = 476,683.30 : x
  2. Step 2: Convert to fraction form
    742,403.80/1,113,605.70 = 476,683.30/x
  3. Step 3: Cross multiply
    742,403.80x = 1,113,605.70 × 476,683.30
  4. Step 4: Simplify right side
    742,403.80x = 530,837,239,974.81
  5. Step 5: Solve for x
    x = 530,837,239,974.81/742,403.80
  6. Step 6: Final answer
    x = 715,024.95

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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.