Home / 1,219,378,234.32-1,682,620,547.04-690,636,692.16

Finding the Fourth Proportional to 1,219,378,234.32, 1,682,620,547.04 and 690,636,692.16

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Solution

The fourth proportional to 1,219,378,234.32, 1,682,620,547.04 and 690,636,692.16 is: 953,009,866.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,378,234.32 : 1,682,620,547.04 = 690,636,692.16 : x
  2. Step 2: Convert to fraction form
    1,219,378,234.32/1,682,620,547.04 = 690,636,692.16/x
  3. Step 3: Cross multiply
    1,219,378,234.32x = 1,682,620,547.04 × 690,636,692.16
  4. Step 4: Simplify right side
    1,219,378,234.32x = 1,162,079,488,768,155,136
  5. Step 5: Solve for x
    x = 1,162,079,488,768,155,136/1,219,378,234.32
  6. Step 6: Final answer
    x = 953,009,866.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.