Home / 1,231,390,192.18-1,699,297,461.81-666,870,488.50

Finding the Fourth Proportional to 1,231,390,192.18, 1,699,297,461.81 and 666,870,488.50

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Solution

The fourth proportional to 1,231,390,192.18, 1,699,297,461.81 and 666,870,488.50 is: 920,269,899.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,390,192.18 : 1,699,297,461.81 = 666,870,488.50 : x
  2. Step 2: Convert to fraction form
    1,231,390,192.18/1,699,297,461.81 = 666,870,488.50/x
  3. Step 3: Cross multiply
    1,231,390,192.18x = 1,699,297,461.81 × 666,870,488.50
  4. Step 4: Simplify right side
    1,231,390,192.18x = 1,133,211,328,464,044,800
  5. Step 5: Solve for x
    x = 1,133,211,328,464,044,800/1,231,390,192.18
  6. Step 6: Final answer
    x = 920,269,899.55

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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.