Home / 1,990,656,009.60-2,985,984,014.40-971,440,137.60

Finding the Fourth Proportional to 1,990,656,009.60, 2,985,984,014.40 and 971,440,137.60

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Solution

The fourth proportional to 1,990,656,009.60, 2,985,984,014.40 and 971,440,137.60 is: 1,457,160,206.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,656,009.60 : 2,985,984,014.40 = 971,440,137.60 : x
  2. Step 2: Convert to fraction form
    1,990,656,009.60/2,985,984,014.40 = 971,440,137.60/x
  3. Step 3: Cross multiply
    1,990,656,009.60x = 2,985,984,014.40 × 971,440,137.60
  4. Step 4: Simplify right side
    1,990,656,009.60x = 2,900,704,721,820,136,448
  5. Step 5: Solve for x
    x = 2,900,704,721,820,136,448/1,990,656,009.60
  6. Step 6: Final answer
    x = 1,457,160,206.40

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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.