Home / 5,280,587,917.40-7,920,881,876.10-4,428,262,841.60

Finding the Fourth Proportional to 5,280,587,917.40, 7,920,881,876.10 and 4,428,262,841.60

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Solution

The fourth proportional to 5,280,587,917.40, 7,920,881,876.10 and 4,428,262,841.60 is: 6,642,394,262.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280,587,917.40 : 7,920,881,876.10 = 4,428,262,841.60 : x
  2. Step 2: Convert to fraction form
    5,280,587,917.40/7,920,881,876.10 = 4,428,262,841.60/x
  3. Step 3: Cross multiply
    5,280,587,917.40x = 7,920,881,876.10 × 4,428,262,841.60
  4. Step 4: Simplify right side
    5,280,587,917.40x = 35,075,746,884,636,528,640
  5. Step 5: Solve for x
    x = 35,075,746,884,636,528,640/5,280,587,917.40
  6. Step 6: Final answer
    x = 6,642,394,262.40

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.