Home / 913,328.48-1,260,395.76-505,458.45

Finding the Fourth Proportional to 913,328.48, 1,260,395.76 and 505,458.45

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Solution

The fourth proportional to 913,328.48, 1,260,395.76 and 505,458.45 is: 697,534.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,328.48 : 1,260,395.76 = 505,458.45 : x
  2. Step 2: Convert to fraction form
    913,328.48/1,260,395.76 = 505,458.45/x
  3. Step 3: Cross multiply
    913,328.48x = 1,260,395.76 × 505,458.45
  4. Step 4: Simplify right side
    913,328.48x = 637,077,681,557.89
  5. Step 5: Solve for x
    x = 637,077,681,557.89/913,328.48
  6. Step 6: Final answer
    x = 697,534.01

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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.