Home / 917,075.50-1,265,603.70-509,177.36

Finding the Fourth Proportional to 917,075.50, 1,265,603.70 and 509,177.36

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Solution

The fourth proportional to 917,075.50, 1,265,603.70 and 509,177.36 is: 702,686.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,075.50 : 1,265,603.70 = 509,177.36 : x
  2. Step 2: Convert to fraction form
    917,075.50/1,265,603.70 = 509,177.36/x
  3. Step 3: Cross multiply
    917,075.50x = 1,265,603.70 × 509,177.36
  4. Step 4: Simplify right side
    917,075.50x = 644,416,750,772.23
  5. Step 5: Solve for x
    x = 644,416,750,772.23/917,075.50
  6. Step 6: Final answer
    x = 702,686.69

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1.5x scale

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.