Home / 1,185,802.90-1,636,408.52-641,938.68

Finding the Fourth Proportional to 1,185,802.90, 1,636,408.52 and 641,938.68

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Solution

The fourth proportional to 1,185,802.90, 1,636,408.52 and 641,938.68 is: 885,875.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,802.90 : 1,636,408.52 = 641,938.68 : x
  2. Step 2: Convert to fraction form
    1,185,802.90/1,636,408.52 = 641,938.68/x
  3. Step 3: Cross multiply
    1,185,802.90x = 1,636,408.52 × 641,938.68
  4. Step 4: Simplify right side
    1,185,802.90x = 1,050,473,925,269.55
  5. Step 5: Solve for x
    x = 1,050,473,925,269.55/1,185,802.90
  6. Step 6: Final answer
    x = 885,875.66

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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.