Home / 1,990,657,179.60-2,985,985,769.40-971,441,307.60

Finding the Fourth Proportional to 1,990,657,179.60, 2,985,985,769.40 and 971,441,307.60

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Solution

The fourth proportional to 1,990,657,179.60, 2,985,985,769.40 and 971,441,307.60 is: 1,457,161,961.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,657,179.60 : 2,985,985,769.40 = 971,441,307.60 : x
  2. Step 2: Convert to fraction form
    1,990,657,179.60/2,985,985,769.40 = 971,441,307.60/x
  3. Step 3: Cross multiply
    1,990,657,179.60x = 2,985,985,769.40 × 971,441,307.60
  4. Step 4: Simplify right side
    1,990,657,179.60x = 2,900,709,920,300,928,000
  5. Step 5: Solve for x
    x = 2,900,709,920,300,928,000/1,990,657,179.60
  6. Step 6: Final answer
    x = 1,457,161,961.40

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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.