Home / 868,065,592.30-1,198,033,214.59-515,642,975.40

Finding the Fourth Proportional to 868,065,592.30, 1,198,033,214.59 and 515,642,975.40

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Solution

The fourth proportional to 868,065,592.30, 1,198,033,214.59 and 515,642,975.40 is: 711,648,309.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,065,592.30 : 1,198,033,214.59 = 515,642,975.40 : x
  2. Step 2: Convert to fraction form
    868,065,592.30/1,198,033,214.59 = 515,642,975.40/x
  3. Step 3: Cross multiply
    868,065,592.30x = 1,198,033,214.59 × 515,642,975.40
  4. Step 4: Simplify right side
    868,065,592.30x = 617,757,411,399,214,208
  5. Step 5: Solve for x
    x = 617,757,411,399,214,208/868,065,592.30
  6. Step 6: Final answer
    x = 711,648,309.62

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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.