Home / 647,354,121.40-971,031,182.10-402,466,108.60

Finding the Fourth Proportional to 647,354,121.40, 971,031,182.10 and 402,466,108.60

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Solution

The fourth proportional to 647,354,121.40, 971,031,182.10 and 402,466,108.60 is: 603,699,162.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,354,121.40 : 971,031,182.10 = 402,466,108.60 : x
  2. Step 2: Convert to fraction form
    647,354,121.40/971,031,182.10 = 402,466,108.60/x
  3. Step 3: Cross multiply
    647,354,121.40x = 971,031,182.10 × 402,466,108.60
  4. Step 4: Simplify right side
    647,354,121.40x = 390,807,141,189,044,992
  5. Step 5: Solve for x
    x = 390,807,141,189,044,992/647,354,121.40
  6. Step 6: Final answer
    x = 603,699,162.90

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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.