Home / 878,642.18-1,212,510.10-496,668.96

Finding the Fourth Proportional to 878,642.18, 1,212,510.10 and 496,668.96

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Solution

The fourth proportional to 878,642.18, 1,212,510.10 and 496,668.96 is: 685,394.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,642.18 : 1,212,510.10 = 496,668.96 : x
  2. Step 2: Convert to fraction form
    878,642.18/1,212,510.10 = 496,668.96/x
  3. Step 3: Cross multiply
    878,642.18x = 1,212,510.10 × 496,668.96
  4. Step 4: Simplify right side
    878,642.18x = 602,216,130,356.50
  5. Step 5: Solve for x
    x = 602,216,130,356.50/878,642.18
  6. Step 6: Final answer
    x = 685,394.06

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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.