Home / 872,510.40-1,308,506.40-339,724.80

Finding the Fourth Proportional to 872,510.40, 1,308,506.40 and 339,724.80

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Solution

The fourth proportional to 872,510.40, 1,308,506.40 and 339,724.80 is: 509,486.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,510.40 : 1,308,506.40 = 339,724.80 : x
  2. Step 2: Convert to fraction form
    872,510.40/1,308,506.40 = 339,724.80/x
  3. Step 3: Cross multiply
    872,510.40x = 1,308,506.40 × 339,724.80
  4. Step 4: Simplify right side
    872,510.40x = 444,532,075,038.72
  5. Step 5: Solve for x
    x = 444,532,075,038.72/872,510.40
  6. Step 6: Final answer
    x = 509,486.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.