Home / 684,539,482.60-1,021,053,870.05-621,696,918.78

Finding the Fourth Proportional to 684,539,482.60, 1,021,053,870.05 and 621,696,918.78

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Solution

The fourth proportional to 684,539,482.60, 1,021,053,870.05 and 621,696,918.78 is: 927,318,381.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,539,482.60 : 1,021,053,870.05 = 621,696,918.78 : x
  2. Step 2: Convert to fraction form
    684,539,482.60/1,021,053,870.05 = 621,696,918.78/x
  3. Step 3: Cross multiply
    684,539,482.60x = 1,021,053,870.05 × 621,696,918.78
  4. Step 4: Simplify right side
    684,539,482.60x = 634,786,044,918,479,488
  5. Step 5: Solve for x
    x = 634,786,044,918,479,488/684,539,482.60
  6. Step 6: Final answer
    x = 927,318,381.27

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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.