Home / 1,668,153,890.91-2,301,900,211.77-989,853,943.69

Finding the Fourth Proportional to 1,668,153,890.91, 2,301,900,211.77 and 989,853,943.69

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Solution

The fourth proportional to 1,668,153,890.91, 2,301,900,211.77 and 989,853,943.69 is: 1,365,908,154.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668,153,890.91 : 2,301,900,211.77 = 989,853,943.69 : x
  2. Step 2: Convert to fraction form
    1,668,153,890.91/2,301,900,211.77 = 989,853,943.69/x
  3. Step 3: Cross multiply
    1,668,153,890.91x = 2,301,900,211.77 × 989,853,943.69
  4. Step 4: Simplify right side
    1,668,153,890.91x = 2,278,545,002,600,595,712
  5. Step 5: Solve for x
    x = 2,278,545,002,600,595,712/1,668,153,890.91
  6. Step 6: Final answer
    x = 1,365,908,154.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.