Home / 1,186,392,867.39-1,778,343,569.02-399,173,237.70

Finding the Fourth Proportional to 1,186,392,867.39, 1,778,343,569.02 and 399,173,237.70

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Solution

The fourth proportional to 1,186,392,867.39, 1,778,343,569.02 and 399,173,237.70 is: 598,340,718.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,392,867.39 : 1,778,343,569.02 = 399,173,237.70 : x
  2. Step 2: Convert to fraction form
    1,186,392,867.39/1,778,343,569.02 = 399,173,237.70/x
  3. Step 3: Cross multiply
    1,186,392,867.39x = 1,778,343,569.02 × 399,173,237.70
  4. Step 4: Simplify right side
    1,186,392,867.39x = 709,867,160,188,686,848
  5. Step 5: Solve for x
    x = 709,867,160,188,686,848/1,186,392,867.39
  6. Step 6: Final answer
    x = 598,340,718.07

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Double scale
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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.