Home / 684,539,476.40-1,021,053,860.78-621,696,912.57

Finding the Fourth Proportional to 684,539,476.40, 1,021,053,860.78 and 621,696,912.57

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Solution

The fourth proportional to 684,539,476.40, 1,021,053,860.78 and 621,696,912.57 is: 927,318,371.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,539,476.40 : 1,021,053,860.78 = 621,696,912.57 : x
  2. Step 2: Convert to fraction form
    684,539,476.40/1,021,053,860.78 = 621,696,912.57/x
  3. Step 3: Cross multiply
    684,539,476.40x = 1,021,053,860.78 × 621,696,912.57
  4. Step 4: Simplify right side
    684,539,476.40x = 634,786,032,811,496,192
  5. Step 5: Solve for x
    x = 634,786,032,811,496,192/684,539,476.40
  6. Step 6: Final answer
    x = 927,318,371.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.