Home / 1,155,897.18-1,595,140.74-639,688.64

Finding the Fourth Proportional to 1,155,897.18, 1,595,140.74 and 639,688.64

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Solution

The fourth proportional to 1,155,897.18, 1,595,140.74 and 639,688.64 is: 882,771.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155,897.18 : 1,595,140.74 = 639,688.64 : x
  2. Step 2: Convert to fraction form
    1,155,897.18/1,595,140.74 = 639,688.64/x
  3. Step 3: Cross multiply
    1,155,897.18x = 1,595,140.74 × 639,688.64
  4. Step 4: Simplify right side
    1,155,897.18x = 1,020,393,404,192.51
  5. Step 5: Solve for x
    x = 1,020,393,404,192.51/1,155,897.18
  6. Step 6: Final answer
    x = 882,771.77

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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.