Home / 670,619,543.70-1,005,929,315.55-638,874,801.30

Finding the Fourth Proportional to 670,619,543.70, 1,005,929,315.55 and 638,874,801.30

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Solution

The fourth proportional to 670,619,543.70, 1,005,929,315.55 and 638,874,801.30 is: 958,312,201.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,619,543.70 : 1,005,929,315.55 = 638,874,801.30 : x
  2. Step 2: Convert to fraction form
    670,619,543.70/1,005,929,315.55 = 638,874,801.30/x
  3. Step 3: Cross multiply
    670,619,543.70x = 1,005,929,315.55 × 638,874,801.30
  4. Step 4: Simplify right side
    670,619,543.70x = 642,662,891,593,851,136
  5. Step 5: Solve for x
    x = 642,662,891,593,851,136/670,619,543.70
  6. Step 6: Final answer
    x = 958,312,201.95

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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.