Home / 712,890.53-1,069,252.59-286,409.13

Finding the Fourth Proportional to 712,890.53, 1,069,252.59 and 286,409.13

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Solution

The fourth proportional to 712,890.53, 1,069,252.59 and 286,409.13 is: 429,580.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,890.53 : 1,069,252.59 = 286,409.13 : x
  2. Step 2: Convert to fraction form
    712,890.53/1,069,252.59 = 286,409.13/x
  3. Step 3: Cross multiply
    712,890.53x = 1,069,252.59 × 286,409.13
  4. Step 4: Simplify right side
    712,890.53x = 306,243,704,052.15
  5. Step 5: Solve for x
    x = 306,243,704,052.15/712,890.53
  6. Step 6: Final answer
    x = 429,580.27

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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.