Home / 1,245,765,320.47-1,868,833,790.28-458,758,460.60

Finding the Fourth Proportional to 1,245,765,320.47, 1,868,833,790.28 and 458,758,460.60

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Solution

The fourth proportional to 1,245,765,320.47, 1,868,833,790.28 and 458,758,460.60 is: 688,206,116.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,765,320.47 : 1,868,833,790.28 = 458,758,460.60 : x
  2. Step 2: Convert to fraction form
    1,245,765,320.47/1,868,833,790.28 = 458,758,460.60/x
  3. Step 3: Cross multiply
    1,245,765,320.47x = 1,868,833,790.28 × 458,758,460.60
  4. Step 4: Simplify right side
    1,245,765,320.47x = 857,343,312,736,771,968
  5. Step 5: Solve for x
    x = 857,343,312,736,771,968/1,245,765,320.47
  6. Step 6: Final answer
    x = 688,206,116.07

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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.