Home / 989,126,412.80-1,483,689,619.20-868,194,060.80

Finding the Fourth Proportional to 989,126,412.80, 1,483,689,619.20 and 868,194,060.80

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Solution

The fourth proportional to 989,126,412.80, 1,483,689,619.20 and 868,194,060.80 is: 1,302,291,091.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,126,412.80 : 1,483,689,619.20 = 868,194,060.80 : x
  2. Step 2: Convert to fraction form
    989,126,412.80/1,483,689,619.20 = 868,194,060.80/x
  3. Step 3: Cross multiply
    989,126,412.80x = 1,483,689,619.20 × 868,194,060.80
  4. Step 4: Simplify right side
    989,126,412.80x = 1,288,130,515,460,053,504
  5. Step 5: Solve for x
    x = 1,288,130,515,460,053,504/989,126,412.80
  6. Step 6: Final answer
    x = 1,302,291,091.20

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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.