Home / 1,185,849,321.81-1,636,472,219.23-657,247,434.64

Finding the Fourth Proportional to 1,185,849,321.81, 1,636,472,219.23 and 657,247,434.64

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Solution

The fourth proportional to 1,185,849,321.81, 1,636,472,219.23 and 657,247,434.64 is: 907,001,545.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,849,321.81 : 1,636,472,219.23 = 657,247,434.64 : x
  2. Step 2: Convert to fraction form
    1,185,849,321.81/1,636,472,219.23 = 657,247,434.64/x
  3. Step 3: Cross multiply
    1,185,849,321.81x = 1,636,472,219.23 × 657,247,434.64
  4. Step 4: Simplify right side
    1,185,849,321.81x = 1,075,567,167,949,350,144
  5. Step 5: Solve for x
    x = 1,075,567,167,949,350,144/1,185,849,321.81
  6. Step 6: Final answer
    x = 907,001,545.78

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Double scale
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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.