Home / 854,711,999.80-1,282,067,999.70-579,212,985.40

Finding the Fourth Proportional to 854,711,999.80, 1,282,067,999.70 and 579,212,985.40

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Solution

The fourth proportional to 854,711,999.80, 1,282,067,999.70 and 579,212,985.40 is: 868,819,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,711,999.80 : 1,282,067,999.70 = 579,212,985.40 : x
  2. Step 2: Convert to fraction form
    854,711,999.80/1,282,067,999.70 = 579,212,985.40/x
  3. Step 3: Cross multiply
    854,711,999.80x = 1,282,067,999.70 × 579,212,985.40
  4. Step 4: Simplify right side
    854,711,999.80x = 742,590,433,592,043,264
  5. Step 5: Solve for x
    x = 742,590,433,592,043,264/854,711,999.80
  6. Step 6: Final answer
    x = 868,819,478.10

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1.5x scale

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.