Home / 679,892,469.20-1,019,838,703.80-626,323,216.40

Finding the Fourth Proportional to 679,892,469.20, 1,019,838,703.80 and 626,323,216.40

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Solution

The fourth proportional to 679,892,469.20, 1,019,838,703.80 and 626,323,216.40 is: 939,484,824.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,892,469.20 : 1,019,838,703.80 = 626,323,216.40 : x
  2. Step 2: Convert to fraction form
    679,892,469.20/1,019,838,703.80 = 626,323,216.40/x
  3. Step 3: Cross multiply
    679,892,469.20x = 1,019,838,703.80 × 626,323,216.40
  4. Step 4: Simplify right side
    679,892,469.20x = 638,748,657,173,222,912
  5. Step 5: Solve for x
    x = 638,748,657,173,222,912/679,892,469.20
  6. Step 6: Final answer
    x = 939,484,824.60

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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.