Home / 690,624,019.60-1,035,936,029.40-686,592,941.20

Finding the Fourth Proportional to 690,624,019.60, 1,035,936,029.40 and 686,592,941.20

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Solution

The fourth proportional to 690,624,019.60, 1,035,936,029.40 and 686,592,941.20 is: 1,029,889,411.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,624,019.60 : 1,035,936,029.40 = 686,592,941.20 : x
  2. Step 2: Convert to fraction form
    690,624,019.60/1,035,936,029.40 = 686,592,941.20/x
  3. Step 3: Cross multiply
    690,624,019.60x = 1,035,936,029.40 × 686,592,941.20
  4. Step 4: Simplify right side
    690,624,019.60x = 711,266,365,320,795,648
  5. Step 5: Solve for x
    x = 711,266,365,320,795,648/690,624,019.60
  6. Step 6: Final answer
    x = 1,029,889,411.80

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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.