Home / 1,018,688.81-1,405,205.17-636,051.29

Finding the Fourth Proportional to 1,018,688.81, 1,405,205.17 and 636,051.29

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Solution

The fourth proportional to 1,018,688.81, 1,405,205.17 and 636,051.29 is: 877,385.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018,688.81 : 1,405,205.17 = 636,051.29 : x
  2. Step 2: Convert to fraction form
    1,018,688.81/1,405,205.17 = 636,051.29/x
  3. Step 3: Cross multiply
    1,018,688.81x = 1,405,205.17 × 636,051.29
  4. Step 4: Simplify right side
    1,018,688.81x = 893,782,552,477.02
  5. Step 5: Solve for x
    x = 893,782,552,477.02/1,018,688.81
  6. Step 6: Final answer
    x = 877,385.27

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Double scale
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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.