Home / 639,389,603.79-882,348,339.51-357,136,060.95

Finding the Fourth Proportional to 639,389,603.79, 882,348,339.51 and 357,136,060.95

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Solution

The fourth proportional to 639,389,603.79, 882,348,339.51 and 357,136,060.95 is: 492,842,561.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,389,603.79 : 882,348,339.51 = 357,136,060.95 : x
  2. Step 2: Convert to fraction form
    639,389,603.79/882,348,339.51 = 357,136,060.95/x
  3. Step 3: Cross multiply
    639,389,603.79x = 882,348,339.51 × 357,136,060.95
  4. Step 4: Simplify right side
    639,389,603.79x = 315,118,410,358,374,656
  5. Step 5: Solve for x
    x = 315,118,410,358,374,656/639,389,603.79
  6. Step 6: Final answer
    x = 492,842,561.86

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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.