Home / 528,985.85-730,223.95-357,136.60

Finding the Fourth Proportional to 528,985.85, 730,223.95 and 357,136.60

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Solution

The fourth proportional to 528,985.85, 730,223.95 and 357,136.60 is: 492,999.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,985.85 : 730,223.95 = 357,136.60 : x
  2. Step 2: Convert to fraction form
    528,985.85/730,223.95 = 357,136.60/x
  3. Step 3: Cross multiply
    528,985.85x = 730,223.95 × 357,136.60
  4. Step 4: Simplify right side
    528,985.85x = 260,789,700,333.18
  5. Step 5: Solve for x
    x = 260,789,700,333.18/528,985.85
  6. Step 6: Final answer
    x = 492,999.39

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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.