Home / 390,141,627.94-537,874,620.32-309,939,725.86

Finding the Fourth Proportional to 390,141,627.94, 537,874,620.32 and 309,939,725.86

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Solution

The fourth proportional to 390,141,627.94, 537,874,620.32 and 309,939,725.86 is: 427,303,062.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,141,627.94 : 537,874,620.32 = 309,939,725.86 : x
  2. Step 2: Convert to fraction form
    390,141,627.94/537,874,620.32 = 309,939,725.86/x
  3. Step 3: Cross multiply
    390,141,627.94x = 537,874,620.32 × 309,939,725.86
  4. Step 4: Simplify right side
    390,141,627.94x = 166,708,712,369,032,416
  5. Step 5: Solve for x
    x = 166,708,712,369,032,416/390,141,627.94
  6. Step 6: Final answer
    x = 427,303,062.35

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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.