Home / 645,130,670,108.10-890,280,411,889.95-356,098,984,041.93

Finding the Fourth Proportional to 645,130,670,108.10, 890,280,411,889.95 and 356,098,984,041.93

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Solution

The fourth proportional to 645,130,670,108.10, 890,280,411,889.95 and 356,098,984,041.93 is: 491,416,646,077.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,130,670,108.10 : 890,280,411,889.95 = 356,098,984,041.93 : x
  2. Step 2: Convert to fraction form
    645,130,670,108.10/890,280,411,889.95 = 356,098,984,041.93/x
  3. Step 3: Cross multiply
    645,130,670,108.10x = 890,280,411,889.95 × 356,098,984,041.93
  4. Step 4: Simplify right side
    645,130,670,108.10x = 317,027,950,186,442,176,593,920
  5. Step 5: Solve for x
    x = 317,027,950,186,442,176,593,920/645,130,670,108.10
  6. Step 6: Final answer
    x = 491,416,646,077.79

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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.