Home / 684,288,311.20-1,026,432,466.80-670,683,421.60

Finding the Fourth Proportional to 684,288,311.20, 1,026,432,466.80 and 670,683,421.60

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Solution

The fourth proportional to 684,288,311.20, 1,026,432,466.80 and 670,683,421.60 is: 1,006,025,132.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,288,311.20 : 1,026,432,466.80 = 670,683,421.60 : x
  2. Step 2: Convert to fraction form
    684,288,311.20/1,026,432,466.80 = 670,683,421.60/x
  3. Step 3: Cross multiply
    684,288,311.20x = 1,026,432,466.80 × 670,683,421.60
  4. Step 4: Simplify right side
    684,288,311.20x = 688,411,238,874,752,384
  5. Step 5: Solve for x
    x = 688,411,238,874,752,384/684,288,311.20
  6. Step 6: Final answer
    x = 1,006,025,132.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.