Home / 688,985,514.60-1,033,478,271.90-628,720,105.20

Finding the Fourth Proportional to 688,985,514.60, 1,033,478,271.90 and 628,720,105.20

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Solution

The fourth proportional to 688,985,514.60, 1,033,478,271.90 and 628,720,105.20 is: 943,080,157.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,985,514.60 : 1,033,478,271.90 = 628,720,105.20 : x
  2. Step 2: Convert to fraction form
    688,985,514.60/1,033,478,271.90 = 628,720,105.20/x
  3. Step 3: Cross multiply
    688,985,514.60x = 1,033,478,271.90 × 628,720,105.20
  4. Step 4: Simplify right side
    688,985,514.60x = 649,768,567,830,882,176
  5. Step 5: Solve for x
    x = 649,768,567,830,882,176/688,985,514.60
  6. Step 6: Final answer
    x = 943,080,157.80

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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.