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Finding the Fourth Proportional to 891,671.65, 1,230,506.76 and 509,706.69

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Solution

The fourth proportional to 891,671.65, 1,230,506.76 and 509,706.69 is: 703,395.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,671.65 : 1,230,506.76 = 509,706.69 : x
  2. Step 2: Convert to fraction form
    891,671.65/1,230,506.76 = 509,706.69/x
  3. Step 3: Cross multiply
    891,671.65x = 1,230,506.76 × 509,706.69
  4. Step 4: Simplify right side
    891,671.65x = 627,197,527,662.22
  5. Step 5: Solve for x
    x = 627,197,527,662.22/891,671.65
  6. Step 6: Final answer
    x = 703,395.17

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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.