Home / 1,186,192.90-1,636,953.98-642,328.72

Finding the Fourth Proportional to 1,186,192.90, 1,636,953.98 and 642,328.72

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Solution

The fourth proportional to 1,186,192.90, 1,636,953.98 and 642,328.72 is: 886,417.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,192.90 : 1,636,953.98 = 642,328.72 : x
  2. Step 2: Convert to fraction form
    1,186,192.90/1,636,953.98 = 642,328.72/x
  3. Step 3: Cross multiply
    1,186,192.90x = 1,636,953.98 × 642,328.72
  4. Step 4: Simplify right side
    1,186,192.90x = 1,051,462,547,302.59
  5. Step 5: Solve for x
    x = 1,051,462,547,302.59/1,186,192.90
  6. Step 6: Final answer
    x = 886,417.84

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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.