Home / 530,178.75-731,641.01-315,314.10

Finding the Fourth Proportional to 530,178.75, 731,641.01 and 315,314.10

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Solution

The fourth proportional to 530,178.75, 731,641.01 and 315,314.10 is: 435,130.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,178.75 : 731,641.01 = 315,314.10 : x
  2. Step 2: Convert to fraction form
    530,178.75/731,641.01 = 315,314.10/x
  3. Step 3: Cross multiply
    530,178.75x = 731,641.01 × 315,314.10
  4. Step 4: Simplify right side
    530,178.75x = 230,696,725,014.67
  5. Step 5: Solve for x
    x = 230,696,725,014.67/530,178.75
  6. Step 6: Final answer
    x = 435,130.09

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.