Home / 712,595.02-983,381.25-390,316.65

Finding the Fourth Proportional to 712,595.02, 983,381.25 and 390,316.65

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Solution

The fourth proportional to 712,595.02, 983,381.25 and 390,316.65 is: 538,637.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,595.02 : 983,381.25 = 390,316.65 : x
  2. Step 2: Convert to fraction form
    712,595.02/983,381.25 = 390,316.65/x
  3. Step 3: Cross multiply
    712,595.02x = 983,381.25 × 390,316.65
  4. Step 4: Simplify right side
    712,595.02x = 383,830,075,172.81
  5. Step 5: Solve for x
    x = 383,830,075,172.81/712,595.02
  6. Step 6: Final answer
    x = 538,637.04

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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.