Home / 839,808,889.80-1,259,713,334.70-430,906,374.60

Finding the Fourth Proportional to 839,808,889.80, 1,259,713,334.70 and 430,906,374.60

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Solution

The fourth proportional to 839,808,889.80, 1,259,713,334.70 and 430,906,374.60 is: 646,359,561.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,808,889.80 : 1,259,713,334.70 = 430,906,374.60 : x
  2. Step 2: Convert to fraction form
    839,808,889.80/1,259,713,334.70 = 430,906,374.60/x
  3. Step 3: Cross multiply
    839,808,889.80x = 1,259,713,334.70 × 430,906,374.60
  4. Step 4: Simplify right side
    839,808,889.80x = 542,818,506,090,853,440
  5. Step 5: Solve for x
    x = 542,818,506,090,853,440/839,808,889.80
  6. Step 6: Final answer
    x = 646,359,561.90

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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.