Home / 917,587.60-1,266,228.03-509,715.70

Finding the Fourth Proportional to 917,587.60, 1,266,228.03 and 509,715.70

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Solution

The fourth proportional to 917,587.60, 1,266,228.03 and 509,715.70 is: 703,383.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,587.60 : 1,266,228.03 = 509,715.70 : x
  2. Step 2: Convert to fraction form
    917,587.60/1,266,228.03 = 509,715.70/x
  3. Step 3: Cross multiply
    917,587.60x = 1,266,228.03 × 509,715.70
  4. Step 4: Simplify right side
    917,587.60x = 645,416,306,671.07
  5. Step 5: Solve for x
    x = 645,416,306,671.07/917,587.60
  6. Step 6: Final answer
    x = 703,383.86

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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.