Home / 421,413,671.76-635,279,089.14-393,322,094.16

Finding the Fourth Proportional to 421,413,671.76, 635,279,089.14 and 393,322,094.16

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Solution

The fourth proportional to 421,413,671.76, 635,279,089.14 and 393,322,094.16 is: 592,931,170.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,413,671.76 : 635,279,089.14 = 393,322,094.16 : x
  2. Step 2: Convert to fraction form
    421,413,671.76/635,279,089.14 = 393,322,094.16/x
  3. Step 3: Cross multiply
    421,413,671.76x = 635,279,089.14 × 393,322,094.16
  4. Step 4: Simplify right side
    421,413,671.76x = 249,869,301,716,602,112
  5. Step 5: Solve for x
    x = 249,869,301,716,602,112/421,413,671.76
  6. Step 6: Final answer
    x = 592,931,170.63

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.