Home / 818,242.56-1,129,143.24-455,681.70

Finding the Fourth Proportional to 818,242.56, 1,129,143.24 and 455,681.70

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Solution

The fourth proportional to 818,242.56, 1,129,143.24 and 455,681.70 is: 628,823.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,242.56 : 1,129,143.24 = 455,681.70 : x
  2. Step 2: Convert to fraction form
    818,242.56/1,129,143.24 = 455,681.70/x
  3. Step 3: Cross multiply
    818,242.56x = 1,129,143.24 × 455,681.70
  4. Step 4: Simplify right side
    818,242.56x = 514,529,911,146.71
  5. Step 5: Solve for x
    x = 514,529,911,146.71/818,242.56
  6. Step 6: Final answer
    x = 628,823.21

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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.