Home / 712,890.54-1,069,252.58-286,409.12

Finding the Fourth Proportional to 712,890.54, 1,069,252.58 and 286,409.12

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Solution

The fourth proportional to 712,890.54, 1,069,252.58 and 286,409.12 is: 429,580.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,890.54 : 1,069,252.58 = 286,409.12 : x
  2. Step 2: Convert to fraction form
    712,890.54/1,069,252.58 = 286,409.12/x
  3. Step 3: Cross multiply
    712,890.54x = 1,069,252.58 × 286,409.12
  4. Step 4: Simplify right side
    712,890.54x = 306,243,690,495.53
  5. Step 5: Solve for x
    x = 306,243,690,495.53/712,890.54
  6. Step 6: Final answer
    x = 429,580.24

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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.