Home / 839,812,133.60-1,259,718,200.40-778,590,130.40

Finding the Fourth Proportional to 839,812,133.60, 1,259,718,200.40 and 778,590,130.40

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Solution

The fourth proportional to 839,812,133.60, 1,259,718,200.40 and 778,590,130.40 is: 1,167,885,195.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,812,133.60 : 1,259,718,200.40 = 778,590,130.40 : x
  2. Step 2: Convert to fraction form
    839,812,133.60/1,259,718,200.40 = 778,590,130.40/x
  3. Step 3: Cross multiply
    839,812,133.60x = 1,259,718,200.40 × 778,590,130.40
  4. Step 4: Simplify right side
    839,812,133.60x = 980,804,157,916,689,408
  5. Step 5: Solve for x
    x = 980,804,157,916,689,408/839,812,133.60
  6. Step 6: Final answer
    x = 1,167,885,195.60

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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.