Home / 991,001,431.69-1,367,607,894.87-538,905,840.35

Finding the Fourth Proportional to 991,001,431.69, 1,367,607,894.87 and 538,905,840.35

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Solution

The fourth proportional to 991,001,431.69, 1,367,607,894.87 and 538,905,840.35 is: 743,704,154.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,001,431.69 : 1,367,607,894.87 = 538,905,840.35 : x
  2. Step 2: Convert to fraction form
    991,001,431.69/1,367,607,894.87 = 538,905,840.35/x
  3. Step 3: Cross multiply
    991,001,431.69x = 1,367,607,894.87 × 538,905,840.35
  4. Step 4: Simplify right side
    991,001,431.69x = 737,011,881,854,211,712
  5. Step 5: Solve for x
    x = 737,011,881,854,211,712/991,001,431.69
  6. Step 6: Final answer
    x = 743,704,154.49

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Double scale
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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.