Home / 1,167,506,040.47-1,611,158,284.76-638,870,070.20

Finding the Fourth Proportional to 1,167,506,040.47, 1,611,158,284.76 and 638,870,070.20

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Solution

The fourth proportional to 1,167,506,040.47, 1,611,158,284.76 and 638,870,070.20 is: 881,640,668.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,167,506,040.47 : 1,611,158,284.76 = 638,870,070.20 : x
  2. Step 2: Convert to fraction form
    1,167,506,040.47/1,611,158,284.76 = 638,870,070.20/x
  3. Step 3: Cross multiply
    1,167,506,040.47x = 1,611,158,284.76 × 638,870,070.20
  4. Step 4: Simplify right side
    1,167,506,040.47x = 1,029,320,806,476,682,752
  5. Step 5: Solve for x
    x = 1,029,320,806,476,682,752/1,167,506,040.47
  6. Step 6: Final answer
    x = 881,640,668.91

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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.