Home / 688,985,510.10-1,033,478,265.15-628,720,100.70

Finding the Fourth Proportional to 688,985,510.10, 1,033,478,265.15 and 628,720,100.70

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Solution

The fourth proportional to 688,985,510.10, 1,033,478,265.15 and 628,720,100.70 is: 943,080,151.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,985,510.10 : 1,033,478,265.15 = 628,720,100.70 : x
  2. Step 2: Convert to fraction form
    688,985,510.10/1,033,478,265.15 = 628,720,100.70/x
  3. Step 3: Cross multiply
    688,985,510.10x = 1,033,478,265.15 × 628,720,100.70
  4. Step 4: Simplify right side
    688,985,510.10x = 649,768,558,936,369,280
  5. Step 5: Solve for x
    x = 649,768,558,936,369,280/688,985,510.10
  6. Step 6: Final answer
    x = 943,080,151.05

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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.