Home / 421,402,488,678.51-581,435,762,938.45-238,499,590,255.17

Finding the Fourth Proportional to 421,402,488,678.51, 581,435,762,938.45 and 238,499,590,255.17

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Solution

The fourth proportional to 421,402,488,678.51, 581,435,762,938.45 and 238,499,590,255.17 is: 329,073,023,881.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,402,488,678.51 : 581,435,762,938.45 = 238,499,590,255.17 : x
  2. Step 2: Convert to fraction form
    421,402,488,678.51/581,435,762,938.45 = 238,499,590,255.17/x
  3. Step 3: Cross multiply
    421,402,488,678.51x = 581,435,762,938.45 × 238,499,590,255.17
  4. Step 4: Simplify right side
    421,402,488,678.51x = 138,672,191,220,522,481,090,560
  5. Step 5: Solve for x
    x = 138,672,191,220,522,481,090,560/421,402,488,678.51
  6. Step 6: Final answer
    x = 329,073,023,881.25

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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.